Material Strengths: Fy = 248 MPa, Fu = 400 M Pa The diameter of the holes in the 12 mm - thick plate shown is 22 mm. Determine the ASD design tensile strength (kN) based on fracture on net area. 270 60 75 75 60 A C B D 75 E
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- Two steel plates are connected by a pair of splice plates with eight bolts as shown. The ultimate strength of the bolts is bolts is 270 MPa. An axial tension load of P = 480 kN is transmitted by the steel plates. If a factor of safety of 1.6 with respect to failure by fracture is specified, determine the minimum acceptable diameter "d" for the bolts. %3D P. splice plate steel steel plate plate (2) (1)A specimen of steel 20mm iameter with tasted ngth of 2@mm é tested to destruchon It has an extensiun oomer 200mm 0.25mm einder a load cat elastić limit iŠ r02KH. The maximum load is 180KMf. The total exctenscon at fracture is 56mm and diameter at neck is ISmm, tind the Stress at elastiĈ Tmit ú. Young molulas Percentage Percentage reduc hon Ultimate tensile stress 80KM Gnd he to elongested in areaA mild steel bar of 2cm is subject to tensile test. The bar yields under a load of 80kN. It reaches a maximum load of 150kN and breaks finally at a load of 70kN. Estimate the a) Average tensile stress at yield point b) ultimate tensile stress c) average stress at the breaking point if the diameter of the fractured neck is 1cm
- The light rigid bar ABCD shown is pinned at C and connected to two vertical rods. The bar was initially horizontal, and the rods were stress-free before the load P = 20 KN is applied. %3D Steel E200 GPa A-600mm L1 m 2.0 m 0.6 m 1.5 m Pa20 KN Aluminum E-70 GPa A=900mm L-1.5 m What is the ratio of the deformation of steel to deformation of aluminum?A structural component in the form of a wide plate is to be fabricated from a steel alloy that has a plane strain fracture toughness of 77.0 MPa Vm (70.1 ksi Vin.) and a yield str- ength of 1400 MPa (205.000 si) The flaw size resolution limit of the fla.. tection appara- tus is 4.0 mm (0.16 in ) If the design stress is one-half of the yield strength and the value of Y is 1.0, determine whether a critical flaw foI this plate is subject to detection. Y MDA uniform bar 1 is connected to a tapered rod 2. Both are subjected to aodal loads as shown. If P-7 IN, Determine the total aodal deformation (in mm). Indicate negative sign f comoression. @ 5P O 3P E-200 6P 30 mm emm 80 mm 30 mn 30 mm
- A tensile test was performed on a metal specimen with a diameter of 1 2 inch and a gage length (the length over which the elongation is measured) of 4 inches. The dam were plotted on a load-displacement graph. P vs. L. A best-fit line was drawn through the points, and the slope of the straight-line portion was calculated to be P/L =1392 kips/in. What is the modulus of elasticity?The data in Table 1.5.3 were obtained from a tensile test of a metal specimen with a rectangular cross section of 0.2011in.2 in area and a gage length (the length over which the elongation is measured) of 2.000 inches. The specimen was not loaded to failure. a. Generate a table of stress and strain values. b. Plot these values and draw a best-fit line to obtain a stress-strain curve. c. Determine the modulus of elasticity from the slope of the linear portion of the curve. d. Estimate the value of the proportional limit. e. Use the 0.2 offset method to determine the yield stress.A tensile test was performed on a metal specimen having a circular cross section with a diameter 0. 510 inch. For each increment of load applied, the strain was directly determined by means of a strain gage attached to the specimen. The results are, shown in Table: 1.5.1. a. Prepare a table of stress and strain. b. Plot these data to obtain a stress-strain curve. Do not connect the data points; draw a best-fit straight line through them. c. Determine the modulus of elasticity as the slope of the best-fit line.
- Problem 1 An axial force of P is applied to the center of the rigid end plate shown below. If the portion of the load carried by the aluminum plates is half the portion of the load carried by the brass core, (a) determine the value of h, (b) the total load if the stress in the brass is 50 MPa. Brass core (E = 105 GPa) Aluminum plates (E = 70 GPa) Rigid end plate 300 mm 60 mim 40 mmPleasePROBLEM 1) An aluminum bar carries the axial loads at the positions shown. If E=70GPA, compute the total deformation of the bar. Assume that the bar is suitably braced to prevent buckling. 0.4m D 10KN 0.8m 0.4m B 5KN 0.6m AL 20KN What is the deformation &pE in mm? A=800 mm² A=1,200 mm²